mudlet-makers team mailing list archive

[David M <theexternvoid@xxxxxxxxx>]

Public bug reported:

The MXP spec says that line tag 4 should enable secure mode, but only
for the next tag. It should revert back to its prior mode after the tag
has closed. When Mudlet receive line tag 4, it switches to secure mode,
but it sticks permanently rather than reverting back as it should. This
causes some problems for certain MUDs. For example, in Lusternia (and
presumably other IRE MUDs), they exclusively send MXP via line tag 4 for
their MXP command. When a user turns off MXP on the server, Lusternia
stops sending MXP commands to Mudlet. But, Mudlet is still stuck in MXP
security mode because it didn't revert back at the end of each tag. This
causes it to squelch anything between a < and >, mistakingly thinking
them as MXP tags.

MXP references:
https://web.archive.org/web/20101023084054/http://www.mudstandards.org/MXP_Line_Tags
www.zuggsoft.com/zmud/mxp.htm#MXP%20Line%20Tags

I have attached a patch to fix this bug.

If you want to reproduce the bug, here are steps using Lusternia as your host (or possibly any IRE game). Enter these commands:
CONFIG MXP ON
CONFIG MXP OFF
SAY <Yo!>

With this bug, the second <Yo!> that is echoed back is squelched. With
my patch, it works fine.

** Affects: mudlet
     Importance: Undecided
         Status: New


** Tags: mxp

** Patch added: "mxp-line-tag-4.patch"
   https://bugs.launchpad.net/bugs/1380455/+attachment/4233648/+files/mxp-line-tag-4.patch

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https://bugs.launchpad.net/bugs/1380455

Title:
  MXP line tag 4 does not revert to prior mode at end of tag

Status in Mudlet the MUD client:
  New

Bug description:
  The MXP spec says that line tag 4 should enable secure mode, but only
  for the next tag. It should revert back to its prior mode after the
  tag has closed. When Mudlet receive line tag 4, it switches to secure
  mode, but it sticks permanently rather than reverting back as it
  should. This causes some problems for certain MUDs. For example, in
  Lusternia (and presumably other IRE MUDs), they exclusively send MXP
  via line tag 4 for their MXP command. When a user turns off MXP on the
  server, Lusternia stops sending MXP commands to Mudlet. But, Mudlet is
  still stuck in MXP security mode because it didn't revert back at the
  end of each tag. This causes it to squelch anything between a < and >,
  mistakingly thinking them as MXP tags.

  MXP references:
  https://web.archive.org/web/20101023084054/http://www.mudstandards.org/MXP_Line_Tags
  www.zuggsoft.com/zmud/mxp.htm#MXP%20Line%20Tags

  I have attached a patch to fix this bug.

  If you want to reproduce the bug, here are steps using Lusternia as your host (or possibly any IRE game). Enter these commands:
  CONFIG MXP ON
  CONFIG MXP OFF
  SAY <Yo!>

  With this bug, the second <Yo!> that is echoed back is squelched. With
  my patch, it works fine.

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